[Openstack-stable-maint] Stable check of openstack/oslo.versionedobjects for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/a7c21d8c11074933abe18317b7d38f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3a407b0b90684536929e7b6eeb9d32cb : SUCCESS in 4m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c81e76a2baa74fab87278ce7c72d0461 : FAILURE in 3m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2e140b4522f24371a2f5539a9211252c : SUCCESS in 3m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9fc9541679f0419fae3832fe4ba1e2f5 : SUCCESS in 3m 50s